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8 Cards in this Set
- Front
- Back
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external intercostal muscle
(orientation, nerve, action) |
anteromedially, "down and in"
IC nerves (T1-T11) inspiration, support IC space, elevate ribs |
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internal intercostal muscles
(orientation, nerve, action) |
posterolaterally, "down and out"
IC nerves (T1-T11) expiration, support IC space, depress ribs |
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innermost intercostal mm
(orientation, nerve, action) |
vertically
IC nerves (T1-T11) act with internal ICs |
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subcostal mm
(location, nerve, action) |
on internal surface of posterior ribs
IC nerves depress ribs |
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transversus thoracis mm
(location, nerve, action) |
lower sternum & xiphoid to costal cartilage 2-6
IC nerves depress costal cartilage |
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levatores costarum mm
(location, nerve, action) |
segmental muscle of the back
dorsal rami elevate ribs |
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inspiration muscles
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principle: external ICs, diaphragm
accessory: SCM, scalenes |
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expiration muscles
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quiet breathing: NONE
active breathing: internal ICs, ab mm |
